temperatures are running right now at 59 in napa and low-to-mid 50's everywhere. that is the spring board to check out these temperatures: above average today and ♪ >> in times square this morning, looking at them getting ready for summer. the surf workout. we're doing it too. all right. >> well, this is a hot new workout called surf set and sand aimed at getting a lean look. here from crunch we have you. is it the abs, the butt, i don't know. i don't think judith can hear me because everyone is screaming behind her. hey. hey, what does this work the most? what part of the body. >> this is surf-inspired board that you're going to get a total body workout. >> total body. >> no part of your body that is not working out. >> you can tell it's working everything. >> i wonder how long you have to do that. >> good to see in our onesie. >>> the amazing zac efron is here to talk about a brand-new role in "at any price." zac efron, what am i doing, dropping names? that's right. he's here this morning on "good morning america" right in there. >> also, a new book coming out